<!DOCTYPE html>
<body>
<style>
    select {
        width: 168px;
        padding: 5px;
        font-size: 16px;
        height: 34px;
        background: transparent;
    }
</style>
<p>The background should be blue.</p>
    <input id = "text_input"></input>
<script>
    var select = document.getElementById('text_input');
    if (window.internals)
        internals.setAutofilled(select, true);
</script>
</body>
